What we know about the measurement:

GR Research LGK 2.0 is a passive bookshelves that cost around 1000 USD each.

  • Quality of the measurement data is high.
  • Origin of the data is ASR.
  • Format of the data is generated by a Klippel NFS .
  • Sensitivity: 80.6dB (avg. 100Hz-1kHz for 2.83V estimated at 1m)
  • -3dB (resp. -6db) point v.s. reference is at 79.1Hz (resp. 71.8Hz).
  • Reference level is normalised to 0.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.7dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-70.0°, 70.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-70.0°, 60.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 3.62 and would be 6.54 with a perfect subwoofer.
      • Details: NBD: ON 0.597, LW 0.519, SP 0.531, PIR 0.498; SM: SP0.875, PIR0.791; LFQ 0.177, LFX 68Hz
    • Tonality (Preference) Score is 5.08 with an EQ and would be 7.95 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.404, LW 0.33, SP 0.368, PIR 0.294; SM: SP0.95, PIR0.932; LFQ 0.22, LFX 67Hz
  • Link to original Review: asr review. Links to other reviews: yt review .
GR Research LGK 2.0
AutomaticEQ (IIR)
Set preamp gain to: -2.3dB.
Type Freq Q Gain
3 138.0 1.29 -2.99
3 280.0 0.26 2.34
3 494.0 2.0 -1.35
3 1067.0 2.75 -0.88
3 1648.0 2.99 2.98
3 2721.0 0.45 -2.08
3 8478.0 2.62 2.52
3 11454.0 2.24 -1.63
3 14473.0 0.68 1.91
Download

These EQ optimise the Harman score and is a good start for far field listening like in your living room.

GR Research LGK 2.0 filters_auto_eq

AutomaticEQ

GR Research LGK 2.0 filters_eq_full

Target v.s. EQ

GR Research LGK 2.0
Graphic EQ 15 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
3 25.0 2.14 0.5
3 40.0 2.14 0.5
3 63.0 2.14 0.5
3 100.0 2.14 0.0
3 160.0 2.14 0.0
3 250.0 2.14 0.25
3 400.0 2.14 0.25
3 630.0 2.14 0.0
3 1000.0 2.14 -0.25
3 1600.0 2.14 0.5
3 2500.0 2.14 -0.25
3 4000.0 2.14 0.0
3 6300.0 2.14 0.0
3 10000.0 2.14 0.0
3 16000.0 2.14 -0.25
Download

These EQ is designed for a 15 bands graphical EQ.

GR Research LGK 2.0
Graphic EQ 31 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.5
3 31.0 4.32 0.5
3 40.0 4.32 0.5
3 50.0 4.32 0.5
3 63.0 4.32 0.5
3 80.0 4.32 0.25
3 100.0 4.32 -0.25
3 125.0 4.32 -0.5
3 160.0 4.32 -0.25
3 200.0 4.32 0.0
3 250.0 4.32 0.0
3 315.0 4.32 0.0
3 400.0 4.32 0.0
3 500.0 4.32 -0.25
3 630.0 4.32 0.0
3 800.0 4.32 -0.25
3 1000.0 4.32 -0.25
3 1250.0 4.32 -0.25
3 1600.0 4.32 0.25
3 2000.0 4.32 -0.5
3 2500.0 4.32 -0.25
3 3150.0 4.32 -0.25
3 4000.0 4.32 -0.5
3 5000.0 4.32 -0.5
3 6300.0 4.32 -0.25
3 8000.0 4.32 0.25
3 10000.0 4.32 0.25
3 12000.0 4.32 0.0
3 16000.0 4.32 0.0
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

GR Research LGK 2.0: comparison between EQs
GR Research LGK 2.0

Comparison betweens various EQs

GR Research LGK 2.0

Improvements made by EQ

Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
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